Nutritive value of Degossypolized cottonseed protein

The traditional method of cottonseed cake squeezing pulp, due to overheating, lysine, methionine and other essential amino acids was damage, utilization rate is very low, especially the free gossypol will be combined with lysine epsilon - NH2, Browning reaction, so as to reduce the effective components of the lysine, so the first restrictive amino acid lysine is cottonseed cake meal.

Cottonseed cake meal is a by-product of cottonseed oil removal after, is a relatively common protein feed, which protein content is 38% ~ 38%, the annual output of 4 million tons, accounting for about 12% of the total annual output of various kinds of cake in our country. Cottonseed meal contains gaa, ring propylene anti nutrition factor such as fatty acid, phytic acid, the gaa most harmful to animals, which have attracted the most attention. Gaa with the free state and in combination with two forms exist, "combination of gossypol" is gaa in the process of high temperature steaming and frying, free gossypol in cottonseed protein, sugar, combine together, it is not absorbed in the digestive tract, can with fecal excretion, low toxicity; "Free gossypol" is a gaa with active aldehyde group and hydroxyl group, the toxicity is bigger, it is a kind of cells, vascular and nerve poison, content is more. 1. The application of the removing gossypol cottonseed protein in pig feed
Dephenolizing process of removing gossypol cottonseed protein feed protein is a kind of good quality and competitive prices. In the whole process of preparing and dephenolizing process, handling of the material is always low temperature operation, not only greatly reduces the content of free gossypol underground, and maximally avoid the thermal denaturation of protein, to ensure the dephenolizing cottonseed protein nutrition is changeless, digestible using